org.osate.ba.parser.AadlAntlrErrorReporter.java Source code

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Here is the source code for org.osate.ba.parser.AadlAntlrErrorReporter.java

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/**
 * AADL-BA-FrontEnd
 * 
 * Copyright  2013 TELECOM ParisTech and CNRS
 * 
 * TELECOM ParisTech/LTCI
 * 
 * Authors: see AUTHORS
 * 
 * This program is free software: you can redistribute it and/or modify 
 * it under the terms of the Eclipse Public License as published by Eclipse,
 * either version 1.0 of the License, or (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * Eclipse Public License for more details.
 * You should have received a copy of the Eclipse Public License
 * along with this program.  If not, see 
 * http://www.eclipse.org/org/documents/epl-v10.php
 */

package org.osate.ba.parser;

import java.util.Arrays;

import org.antlr.v4.runtime.BaseErrorListener;
import org.antlr.v4.runtime.InputMismatchException;
import org.antlr.v4.runtime.NoViableAltException;
import org.antlr.v4.runtime.RecognitionException;
import org.antlr.v4.runtime.Recognizer;
import org.antlr.v4.runtime.Token;
import org.osate.aadl2.modelsupport.errorreporting.ParseErrorReporter;
import org.osate.utils.Aadl2Utils;

public class AadlAntlrErrorReporter extends BaseErrorListener {
    protected final ParseErrorReporter _errReporter;

    protected final String _filename;

    public AadlAntlrErrorReporter(ParseErrorReporter errReporter, String filename) {
        _errReporter = errReporter;
        _filename = filename;
    }

    @Override
    public void syntaxError(Recognizer<?, ?> recognizer, Object offendingSymbol, int line, int charPositionInLine,
            String msg, RecognitionException e) {
        if (e instanceof NoViableAltException || e instanceof InputMismatchException) {
            if (isKeywordError(offendingSymbol, e)) {
                msg = "symbol not allowed at input \'" + ((Token) offendingSymbol).getText()
                        + "\', reserved symbol";
            }
        }

        _errReporter.error(_filename, line, msg);
    }

    protected boolean isKeywordError(Object offendingSymbol, RecognitionException ex) {
        Token symb = (Token) offendingSymbol;

        if (symb.getType() <= AadlBaLexer.KEYWORD_MAX_ID) // Select only keyword.
        {
            String symbol = '\'' + symb.getText() + '\'';
            return Aadl2Utils.contains(symbol, Arrays.asList(AadlBaLexer.tokenNames));
        } else {
            return false;
        }
    }
}